Vietnam Airlines Corporation inspectors have confirmed a pilot's allegations about personnel-related frauds by a fleet head, but said there is no evidence that he helped pilots evade taxes worth hundreds of billions of dong.

Tran Thanh Dung had accused Hoang Van Manh, chief pilot of Vietnam Airlines fleet and the secretary of its Party unit, of violating laws and regulations.

Investigations confirmed that Manh had indeed falsified documents to make out that two subordinates, Nguyen Thi Hanh, 49, and Nghiem Thi Hanh, 38, could get bigger wages.

He also hired Le Truong Giang for the fleet's administrative and planning department in 2009 though Giang failed to score enough in the entrance test.

But the inspectors rejected Dung's charge that Manh had helped foreign pilots evade income tax worth VND720 billion (US$34.5 million), saying there is no evidence.

Dung had said the fleet employed around 1,200 foreign pilots between 2008 and 2011, but, in violation of labor regulations, only informed about six of them to the Ministry of Justice and Hanoi labor authorities.

The total payment made to the pilots was $120 million.

But the inspectors found that 34 foreign pilots had been licensed just in 2010, 16 in 2011, and three this year so far.

To Ngoc Giang, deputy head of the company's Inspection Committee, said the carrier only signed contracts directly with four foreign pilots, hiring the rest through a contractor.